Abstract: A lighting system and a projection device with enhanced functionality includes a light source in the lighting system for emitting first light, a first wavelength selection structure, and a second wavelength selection structure. The first wavelength selection structure includes a wavelength selection portion for transmitting the first light in a first target wavelength and a first light-transmitting portion for transmitting the first light. The light emitted then from the first wavelength selection structure is defined as second light. The second wavelength selection structure receives the second light and applies a supplementary portion for transmitting the second light in a second target wavelength and a second light-transmitting portion for transmitting the light. The light emitted from the second wavelength selection structure is adjustable as to colors, as to low or high color saturation, and as to low or high brightness of the projection image.

Abstract: A heat dissipation structure capable of holding different components at different temperatures within one housing includes at least first and second elements, a refrigerator, and a heat dissipation device. The refrigerator is positioned adjacent to the first element. The refrigerator forms a first heat dissipation channel to dissipate heat from the first element requiring a first target temperature. The dissipation device forms a second heat dissipation channel to dissipate heat from the second element requiring a second target temperature, the first target temperature being higher than the second target temperature.

Abstract: A liquid crystal display device includes a backboard and a liquid crystal panel. The liquid crystal panel includes a first fastener and a second fastener. The first fastener is disposed and fixed on a peripheral portion of a side of the liquid crystal panel facing the backboard. The second fastener is fixed to a peripheral portion of the backboard facing the liquid crystal panel. The first fastener and the second fastener are engaged with each other.